Nut-lock.



No. 653,69l. Patented July 17., I900. 0. A. NORLUND.

NUT LOCK.

(Application filed Mar. 1, 1900.)

(No Model.)

WITNESSES Nrre STATES PTEN OLOF A. NORLUND, OF CEDAR RUN, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO GEORGE A. GAMBLE, OF SAME PLACE.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 653,691, dated July 1'7, 1900. Application filed March 1, 1900. Serial No. 6,999. (No motleld T0 ctZZ whom it may concern:

Be it known that I, OLOF A. NOBLUND, a resident of Cedar Run, in the county of Lycoming and State of Pennsylvania, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

Myinvention relates to an improvement in nut-locks, one object of the invention being to provide an improved lock which will securely hold the nut against accidental turning,but which will permit, without liability of breaking, the removal of the nut when desired.

A further object is to provide a lock with improved means for securing it against movement when the nut is'screwed home.

With these objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figurel is a view illustrating my improvements. Fig. 2 is a side view of the same. Figs. 3, 4, and 5 are detail views of the look.

A represents a bar or plate, 13 a bolt passing therethrough, and C a nut screwed on the end of the bolt B.

My improved lock D comprises a strip or rod of spring metal, preferably angular in cross section and of uniform thickness throughout its length. One end of the strip or rod is bent into circular form, as shown at 2, to surround the bolt B, one end of said circular portion being sprung outward, so as to engage the nut when screwed home. The strip or rod 1 after forming the circular portion 2 is given a quarter-twist to form a sharp cutting edge 3, which is forced into the bar A when the nutis screwed down, so that there will be no possibility of movement of the lock. The top of the rod is preferably flattened or made smooth to prevent iujuriug the nut, and the strip or rod extends in practically a straight line, as shown at 4, and at the end of the straight portion 4 the strip or rod is bent into an approximate semicircle, as shown at 5, and extends inastraightline besidethe portion has shown at 6, thus forming a long spring-loop, and is bent at 7 t-oward the circular portion 2 and outward in a dififerent plane from said circular portion to form a spring-arm 8.

The operation of my improvements is as follows: The bolt B is first placed in position through the bars or plates to be secured, and the circular portion 2 of the lock D is placed around the protruding threaded end of the bolt. The nut is screwedouto the bolt, and as said nut is screwed home its corners will engage the outer face of the springarm 8 and force the same inward'until the corner releases the arm and the latter springs outward. The nut will at the sametime force the cut ting edge 3 into the bar or plate A, and when. the nut is screwed home the side of the springarm 8 will be flat against the nut and in the path thereof, thus absolutely preventing any accidental turning of the nut. When it is desired to remove the nut, it is simply necessary to place the proper tool thereon and turn it, and as the nut turns the spring-arm 8 will be forced outward or to one side by the sides of the nut until the latter is out of the path of the arm.

My improved lock can be employed on the angular head of a bolt, as well as a nut, and

-it will be seen that with my improved look any dirt or refuse which may collect beneath the spring-arm 8 will not interfere in the slightest with the operation of said arm when the nut is being removed. This collection of dirt under the locks now in use is a great annoyance and trouble, and my lock will effectually remedy this difficulty, and owing to the outwardly-sprung end of the circular portion 2 the cutting edge 3 will be maintained in close contact with the barAas long as there is any spring in the lock.

Various slight changes might be resorted to in the general form and arrangement of the several parts described without departing from the spirit and scope of my inven tion, and hence I would have it understood that I do not wish to limit myself to the precise details set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A nut-lock, comprising a strip or rod 5 bent at one end to partially surround a bolt,

one end of said looped portion provided on its under face with a cutting edge and bent to form a spring-arm normally out of the plane of said looped portion and in the path 10 of a nut.

2. A nut-lock, comprising a strip of spring 'metal angular in cross-section and bent at one end into circular form, one end of said circular portion having a quarter-twist to :5 form a cutting inner edge, and bent to form a spring-loop having its free end projecting beyond the circular portion to engage the side of a nut or head of a bolt, said loop be ing constructed to permit its free member to specification in the presence of two subscribing witnesses.

OLOF NORLUND.

Witnesses:

O. B. CooLIDGE, JOHN HILBORN. 

